Flanging tool



Patented Got. 22, 1929 l il" STATES EA'UL RGSENBLOGM, 0F CI-IICdAGO,ILLINOIS FLANGING TOOL Application filed May 22, 1925, Serial Thisinvention relates to a novel tool for forming flanges at or out of theedge of holes in metal plates, and is more particularly intended forforming such flanges upon tops of tanks or drums which have had acircular hole cut in them.

The essential object of this invention is the provision of a tool forthe above purpose which is simple in construction, comparatively cheapin first cost, durable, proficient in use, and well adapted to thepurpose for which it is designed.

it further object of this invention is the provision of a tool for theabove purpose which may be readily assembled for operation with theordinary drill press or the like.

ii further object oi this invention is the provision of a tool for theabove purpose which will form a neat flange out of the edge of holeswithout in any way injuring the plate or receotacle in which said flangeis formed.

A further object of this invention is the n'ovision oi rollers havingvertical portions and inclined portions, and that will be simple,strong, durable and inexpensive in construction, and eflicient andreliable in operation.

With the foregoing and other objects in view which will appear as thedescription proceeds, this invention consists in the construction,arrangement, and combination of parts of my device whereby the objectsconton'ipl ted are attained, as hereinafter more fully set forth,pointed out in the appended claim, and illustrated in the accompanyingdrawings, in which 1-- Figure l is a perspective view of the flangingtool embodying my invention.

Figure 2 is a bottom plan view of the same.

Figure 3 is a vertical section of the same on line 33 of Figure 2.

Throughout the drawings like reference characters indicate like parts.

The numeral 1 designates a circular disc shaped body having a shank Sextending therefrom :tor the purpose of attaching said body to a drillpress or the like in the well known and usual manner. A series of screwthreaded openings 3 adapted to receive bolts No. 32,185. Renewed March16, 1929.

4 carrying flanging rollers 5 adapted to form a flange out of the edgeof a hole in the top of a tank or drum, are formed in the body 1. Saidopenings are positioned in the disc in a circumference of a circle lyinginterinediate the center of the disc and the outer edge thereoi Nuts 8are threaded on the free ends of the bolts i for the purpose of securelyholding said bolts on the disc in operative position.

The rollers 5 comprise an upper vertical portion 6 and a lower portion7, said lower portion being in the form of a frustum of a cone, thelarger diameter of which is contiguous to the upper vertical portion ofsaid roller. By the use of a roller of this shape a very neat and exactflange is obtained, one that will be at right angles to the top of thetank or drum containing the hole, the edge of which is being flanged.

In operation the device is attached to a drill press or the like in theusual and well known manner. As the tool descends into the opening orhole the edge of which is to be flanged, the rollers 5 will bend downthe 7 inner edge of said opening, the inclined por tions. '7 of coursefirst acting on said or go, and when said portions 7 pass below the edgethe vertical portions 6 act upon it, and bend it down to form a verticalflange at right so angles with the upper horizontal portion of the topof the tank or drum containing the hole being flanged.

I would state in conclusion that while the illustrated exampleconstitutes a practical as embodiment of my invention, I do not limitmyself to exact details herein illustrated since, manifestly, the samecan be varied considerably without departing from the spirit of theinvention as defined in the appended claim.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is A flanging tool con'iprising aflat circular disc shaped body portion having a series of openingspositioned in a circumference of a circle lying intermediate the centerof the body portion and its outer edge, bolts positioned in saidopenings, smooth faced rollers mounted for rotation on said bolts, saidrollers comprising an upper Vertical portion and a lower inclinedportion, the outer edges of said vertical portions of said rollersextending to a point inwardly of the outer edge of said body portion,and a shank extending upwardly from the center of said g body portionfor rotating said body portion.

In testimony whereof I affix my s1 nature.

SAUL ROSENBL OM.

